Agreed. Although in my experience it can go badly wrong... http://opensignal.com/blog/2013/04/26/an-apology-to-our-kore...
Although this seems like a good example of why, when crowdsourcing translations, you want to get multiple people doing the same language so you can compare their results.
One man's immature is another man's hilarious. In this case I side with you, but I'm pretty sure if they'd come up with something wittier than "All Koreans are stupid" I could find myself laughing at it.